ACURA MDX . ORG
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Blackened exhaust - Click HERE for Original Thread
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rwilliamtaylor
My 2007 MDX has been getting very poor gas mileage (12-13) city and as high as 18 pure highway. I also think it's sliggish for a 300 HP engine... It almost seems like a brake is dragging but when I put it in neutral ona slight decline it rolls freely.

Also, my exhaust tips have black around the bottom edge.

Anyone else have this?
smm3
I have had my X about 5 months. Mine gets black on the bottom of the exhaust in between washings. I take a damp towel and the black wipes right off.

I will have to say that I have never had a car/SUV where the black "exhaust film" accumulated like on my X. However, it does come off easily so I am not too worried about it.
bluetail47
My tips get the black dust also. MPG appears to be improving with additional miles. I am up to 5,600 miles and combined MPG is averaging around 19.

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